4 ms·

hows about: the bird isn't cold blooded (though the dinosaur is), but pterosaurs are, so only the birds could settle mountain peaks above dust clouds that raine

hows about: the bird isn't cold blooded (though the dinosaur is), but pterosaurs are, so only the birds could settle mountain peaks above dust clouds that rained acid and blocked sun light.

Gibbon1 9y ago
I can't remember the exact limit (I think it's rat dog size) but every large species of went out. Also ammonites surface dwellers went out, nautilus which are deep divers didn't Makes one think anything that couldn't squeeze into a small localized hideout for a year or two didn't make it.
- aisofteng 9y ago
  "rat dog size"?
  - hobs 9y ago
    Generally referred to as a "ratter", a type of dog bred to kill rats. Usually small in stature with a somewhat weasel like build. https://en.wikipedia.org/wiki/Ratter_(dog) https://en.wikipedia.org/wiki/Ratter_(dog)
  - Gibbon1 9y ago
    Small dog, 10-20 lbs.
grondilu 9y ago
Not all cold blooded animals went extinct, you know. Sadly, we may never know why pterosaurs went extinct and not birds. Could be just bad luck. I mean, maybe both groups went through a very narrow bottleneck and only birds survived for no other reasons than particular circumstances.
- pvaldes 9y ago
  We have a possible answer in the artice. Because they breeded in big colonies in tropical or subtropical areas. There are a few places in the world if you search for albatrosses or emperor penguins eggs. If this small place is distroyed, is over for the species.